{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Anatomy"], "input": "By ruling out cell fusion , we clearly demonstrate the existence of an adult hemangioblast , but the differentiation of marrow stem cells toward the endothelial lineage is an extremely rare event ."}
{"Anatomy": ["cell", "hemangioblast", "marrow stem cells", "endothelial lineage"]}